JPH02133735A - Indoor environmental control system - Google Patents

Abstract

PURPOSE:To eliminate useless operation or the continuance of ventilating operation to be carried out even after a room is satisfactorily ventilated by driving automatically a ventilating fan interlocked with the light out detecting operation of a sensor and halting the operation of said ventilating fan in automatic mode after a preset time has passed after having left the room. CONSTITUTION:When entering a room, a switch S is turned on and a constantly closed contact b1 of a relay M2 is under an off-state by the lighting detection operation of a sensor Se. As a result, a ventilating fan F remains unconnected with a power source 1 so that the drive of the ventilating fan F may be prevented. Then, when leaving the room, the switch S is turned off by manipulating the knob of the door, which keeps a constantly open contact a1 of a relay M1 under an off-state, thereby putting out a lighting device L. Therefore, the light out detecting operation of the sensor Se keeps a constantly open contact a2 of the relay M2 under an off-state as well. However, an off-delay type timer T keeps the constantly open contact a1 under an on-state during the preset time. Moreover, the light out detecting operation of the sensor Se returns the constantly closed contact b1 to the off-state, which drives the ventilating fan F and halts its operation after a preset time has passed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a room environment control system mainly used in toilets and bathrooms.

[Conventional technology]

Conventionally, in a toilet 1/, a switch for a lighting fixture used when entering a room and a manual switch for a ventilation fan have been provided separately.

[Problem to be solved by the invention]

However, with this prior art, there is a problem that people forget to turn on the ventilation fan switch after using the toilet, and even if the ventilation switch is turned on, the ventilation fan continues to operate even after the residual odor has disappeared, which is a waste. There is a lingering odor and it is a hassle to load it while it disappears.

The purpose of this invention is to automatically operate a ventilation fan to ventilate a room, and to continue operating even after sufficient ventilation has been achieved.7) A room environmental control system that can eliminate waste. The goal is to provide the following.

[Means to solve the problem]

The room environment control system of the present invention includes a switch for a lighting fixture used when entering a room, and a switch for turning on/off the lighting fixture.
A sensor that detects lights out and a ventilation fan that needs to be operated after leaving the room are driven in conjunction with the lights out detection operation of the sensor, and the ventilation fan is activated after a set time has elapsed from the time when the sensor detects lights out. and a timer means for stopping the timer.

1 Effect] According to the configuration of the present invention, a switch for a lighting device used when entering a room, a sensor that detects whether the lighting device is turned on or off, and a ventilation fan that needs to be operated after leaving the room are connected to the sensor. and a timer means that is driven in conjunction with the light-off detection operation of the sensor and stops the ventilation fan after a set time has elapsed from the time of the light-off detection operation of the sensor, so that the light-off detection of the sensor can be performed after leaving the room. The ventilation fan can be automatically driven in conjunction with the operation to ventilate the room. Moreover, by automatically stopping the ventilation fan after the set time has elapsed, it is possible to eliminate the waste of continuing to operate even after ventilation has been performed for 1 minute.

[Example] An example of the present invention will be described based on FIG. In the room environmental control system, the switch 8 is used to turn on and off the lighting equipment when entering the room. The sensor Se is of a heat or light detection type, and detects whether the lighting fixture I is turned on or off based on the light emission or heat generated by the lighting fixture I. The off-delay type timer means T drives the ventilation fan F, which needs to be operated after leaving the room, in conjunction with the light-off detection operation of the sensor Se, and starts the ventilation fan F after a set time has elapsed from the light-off detection operation of the sensor Se. This is to stop the

The switch S is a so-called button-on/button-off switch.
It is a switch that changes its on/off state each time the door knob is operated back and forth.

The luminaire [, is connected to the electrical ia 1 via the normally open contact a1 of 'Jl/Ml. The ventilation fan is connected to the power source 1 via the normally closed contact a of the relay M2 and the normally open contact a of the relay of the timer means T. The timer means T is connected to the power source 1 via a normally open contact a2 of a relay M2. Relay M1 is connected to power supply 1 via switch S. Sensor Se is connected to power supply 1 via relay M2.

Next, the operation of the circuit shown in FIG. 1 will be explained with reference to time chart 1 in FIG. In FIG. 2, numeral 2 indicates the set time of the timer means 'r, 3 indicates the knob operation when entering the room, 4 indicates the knob operation when leaving the room, and 5 indicates the period of entry. First, when the switch S is turned on by operating the door knob when entering the room, current flows through the relay M, turning on the normally open contact a, and connecting the lighting fixture ■ and the power source 1 to the lighting fixture. 1. lights up. The sensor Se detects the lighting of the °C lighting fixture [, and current flows through the relay M2, thereby turning on the normally open contact a2, connecting the timer means T and the power source 1, and turning on the timer means T. Turn on the normally open contact a of the relay. However, on the other hand, the normally closed contact b2 of the relay M2 is turned off due to the lighting detection operation of the sensor Se, so the ventilation fan 5 remains not connected to the power supply 1.
The ventilation fan 5 is prevented from being driven.

Next, when leaving the room, the switch S is turned off by operating the knob on the door, turning off the normally open contact a of M1 and turning off the lighting equipment (2). For this reason, the normally open contact a2 of the relay M2 is also turned off by the light-off detection operation of the sensor Se. remains on. In addition, due to the light-off detection operation of sensor Se,
Since the normally closed contact b1 of the relay M2 returns to the OFF state, the ventilation fan operates and stops after the set period 2 has elapsed.

In addition, when the manual mode switch SM is turned on, the ventilation fan F is turned on, and the ventilation fan F is turned on even when entering the room.
can be operated.

〔Effect of the invention〕

According to the room environment control system of the present invention, after leaving the room, the ventilation fan can be automatically driven in conjunction with the light-off detection operation of the sensor to ventilate the room. The environment will improve. In addition, by automatically stopping the ventilation fan after the set time has elapsed, it is possible to eliminate the waste of the ventilation fan continuing to operate even after sufficient ventilation has been performed, thereby improving economic efficiency.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a time chart thereof. S switch, L lighting equipment, ventilation fan'1 timer means, Se sensor patent applicant National Housing Industry Co., Ltd.

Claims (1)

[Claims] A switch for a lighting fixture used when entering a room, a sensor that detects whether the lighting fixture is turned on or off, and a ventilation fan that needs to be operated after leaving the room are driven in conjunction with the light-off detection operation of the sensor, and a timer means for stopping the ventilation fan after a set time has elapsed from the time when the sensor detects lights-off.